Cylinder printing-machine



2 Sheets8heet 1.

(No Model.)

J. L. (10X.

CYLINDER PRINTING MAYGHINE.

Patehted Dec. .8, 1885.

WW Attorney EEK-T MK T y i m v P, 2 2 V (No Model.) 2 Sheets-Sheet 2.

J. L. 00X.

GYLINDBR PRINTING MACHINE.

N0. 332,139. Patented Dec. 8, 1885.

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[Hillbillullllll m Illllllllllll IIII V .Attorney V UNITED STATES PATENTOFFICE.

JOSEPH L. COX, OF' LAFAYETTE, INDIANA, ASSIGNOR TO THE DUPLEX PRINTINGPRESS COMPANY, OF BATTLE CREEK, MICHIGAN.

CYLINDER PRINTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 332,139, dated December8, 1885.

Application filed May 7, 1885. Serial No. 164,706. (No model.)

To all whom it may concern:

Be it known that I, J osEPH L. CoX, of Lafayette, in the county ofTippecanoe and State of Indiana, have invented certain new and usefulImprovements in Cylinder Printing- Machines; and I do hereby declarethat the following is a full, clear, and exact description thereof,reference being had to the accompanying drawings, and to the letters ofreference marked thereon,which form part of this specification, inwhich- Figure 1 is a side elevation of my improved printing-press,showing the paper in position to be printed. Fig. 2 is a top plan viewof the same with the paper removed. Fig. 3 is a central vertical sectionthrough the press on the line 00 00, Fig. 2, showing the roll of paperinposition to be printed. Fig. 4 is a transverse vertical section of thesame on line 3/ y, Fig. 2, the paper being removed to more clearly showthe construction. Fig. 5 is a detail view of the rollers and theirgearing. Fig. 6 is a detail view of the ratchet and pawl.

The invention relates to improvements in printing-presses; and itconsists in the construction and novel arrangement of parts hereinafterdescribed, and, pointed out in the appended claims.

In the accompanying drawings, A represents the frame-work of the press,having made upon it the horizontal ways A A.

B is a reciprocating bed-plate, upon which the form is secured in thecenter. The bedplate has secured to its under surface the rabbeted clips12 b, which move on the ways A as the bed-plate reciprocates. C is ahorizontal rack-bar, secured to the upper surface of the bed-plate, nearone side, within the main frame A. The rack-bar C serves a purposehereinafter explained.

D is the main or driving shaft of the ma chine, having upon it. the diskd, upon which is a wrist-pin, d.

d is a connecting-rod or pitman, which is pivoted both to the wrist-pinand to the under surface of the bed-plate A, so that the revolution ofthe disk on the shaft reciprocates the bed-plate. Any other ordinary andsuitable mechanism may be used to reciprocate the bed-plate; but as thesaid mechanism forms no part of the invention a very specificdescription thereof is not necessary.

E is a transverse roller, bearing the roll of paper X. The said rolleris journaled in the main frame A at the end of the machine opposite thatnear which the bed-plate is situated.

F is a transverse roller, journaled in the main frame, near its top, aproper distance inward from the roller E, and having on one side Withinits bearings a gear-wheel, f, as shown. The said roller is arranged bothto carry the paper from the roll X to the impression-cylinder beforeprinting and convey it from the form after printing. Both of theseactions are hereinafter fully explained.

G is a transverse roller, journaled in the main frame to the outer sideand somewhat below the center of the roller F, and g is a pinion on theend thereof meshing with and rotated by the gear-wheel f.

H is a roller vertically below the roller G, and of equal diametertherewith. The roller H has bearings in the frame A and bears upon itsend a pinion, h, which meshes with and is rotated by the pinion g of theroller G.

The rollers H and G receive between them and direct the web-paper a;from the roller X. The rollers F and G receive the web between them andbite it sufficiently to draw it from the roll.

I is the impression-cylinder, journaled in the main frame a properdistance above the bed-plate B and havingsecured to it a pinion, 2',which meshes with a rack-bar C.

J J are four vertical clips, T-shaped in cross-section, two of which aresecured to the inner surface of each side of the main frame at equaldistances from a bearing of the impression-cylinder.

K K are reciprocating bars provided with longitudinal grooves, T-shapedin cross-section, so as to travel on the clips J, and provided on theirfacing-edge with the vertical racks k k.

i'i are pinions on the ends of the impression-cylinder, each of whichlies between the two racks la It at its side of the machine and mesheswith both.

rack-bar will alternately reverse the motion of the pinionc' of theimpression-cylinder. The pinions 'i i will consequently cause therack-bars K on each side of the impressioncylinder to travel in oppositedirections and will reverse their motions at equal intervals of timewhile the machine is operating at uniform speed.

M and M are transverse? rollers, journaled in the main frame at equalheights, the former below and outward from the roller L and the latterbelow and outward from the roller L.

N is a transverse guide-bar, secured to the main frame above the rollerL, as shown. If desired, a roller may be substituted for the saidguide-bar. adjustable longitudinally in reference to the machine, so asto bring the paper at the right point under a stationary cutting deviceand at the same time preserving the tension of the same.

. O is ashaft journaled in the main frame above the roller F, and havingon its end a gear-wheel, 0, which meshes with and is rotated by thegear-wheel f.

0 0 are collars or disks on the shaft 0 near its ends. The edges of thecollars and the surface of the roller F are just sufficiently apart toreceive and bite the paper between them, their motion conveying it awayfrom the machine. The collars may be adjustable longitudinally on andare arranged near the ends of the shaft, so as not to pass over andsmear the printed parts of the paper.

The course of the web-paper x is from the roll X below the roller H,then up between said roller and the roller G, over the latter andbetween it and the largeroller F. It descends from the roller F, passesunder the roller M, and thence ascends and passes over the roller L,whence it descends and passes under the impression-cylinderI. Ascendingfrom the impression-cylinder, it passes over the roller L, anddescending thence and passing below the roller M, it ascends and passesover the guide-bar or roller N, whence it runs between the roller F andthe disks 0 0 of the shaft 0, which disks have diameters equal to thatof the rollers H or G. The rollers F and G feed the paper toward theform, and the roller F and disks 0 convey it away from the.

same. Thus the same roller F performs both acts simultaneously, andconsequently the tension of the paper is kept always the same. Thus anyunevenness or inequality in the roller F will effect the delivery justexactly as it does the feed, and the paper will feed evenly and Theguide-bar or roller N is.

with the same tension. This is a very important feature of theinvention. The rollers L L are the feed-rollers proper for the form andimpression-cylinder; but the roller F feeds the paper toward the form,and is actuated from the main shaft D by the following mechanism:

P isa ratchet-wheel secured to the journal of the roller F, extendedoutward from its bearing, and controlled by the spring-pawl p, pivotedon the main frame.

P is a ratchet-wheel similar to the ratchetwheel P, and secured to thejournal of the roller F, to the outer side of the latter.

Q is a pinion turning loosely on the said journal, to the outer side ofthe ratchet-wheel P, and having a disk, q, fixed to its inner face, toan extension from the upper edge of which is pivoted a pawl, g, whichcoacts with the ratchet-wheel P.

R is a gear-wheel on the extended journal of the main shaft D, which isturned by a driving-pulley, r, from a proper source of power- Thegear-wheel R meshes with a gear-wheel, S, of one-half its diameter,secured to a shaft, S. The shaft S has a bearing in the main frame, andcarries at its outer end a disk, s, I

having a wrist-pin, s, secured to its outer face.

T is a vibrating lever, pivoted at t on a bracket, t, bolted to theouter surface of the main frame. The lower end of the lever has alongitudinal slot, t, which engages the wrist pin 8, so that therotation of the disk 8 vibrates the lever T. The upper end of said leveris formed into a rack, U, made on the arc of a circle having for itscenter the pivotpoint t. The said rack engages the pinion Qv and turnsthe same back and forth as it vibrates.

When the pinion Q is turned in the opposite I U direction to that inwhich the pawls p and q engage, the former pawl holds the ratchetwheelP, and the latter pawl slips over the ratchet-wheel P; consequently theroller F does not rotate and the paper is not fed toward p the form.When the rack U reverses its'motion, the pawl q engages theratchet-wheel P and the roller F is turned and feeds the paper. Thelever and wrist-pin are so arranged that the roller does not rotatewhile the form is reciprocating below the impression -cylinder, butrotates at or near the end of each stroke of the bed-plate. The paper isnot fed toward the form when the bed-plate is passing undertheimpression-cylinder. Whenthe bed-plate reciprocates inward, theroller L ascends and the roller L descends by the action of thedescribed mechanism. The loop of paper between said rollers is thuscarried between the bed plate and cylinder and an impression 1 taken.paper a proper distance forward from the form and comes to rest. Thebed-plate then reciprocates outward, the cylinder reverses its Theroller F then feeds the printed 3 rotation, and the rollers L L reversetheir" action, taking an impression on the outward stroke of thebed-plate.

The diameter of the gear-wheel S is only one-half of that of thegear-wheel B, so that the former makes two rotations to one of thelatter; hence as the bed-plate is reciprocated back and forth by onerotation of the gearwheel R the gear-wheelSwill rotate the roller Ftwice during the said double reciprocation, the mechanism being soarranged that these rotations will occur at or near the same time thatthe movement of the bed-plate reverses. The intervals of rest of theroller F will occur at the time that the bed-plate is passing under theimpression-cylinder and the paper is being printed by the coaction ofthe bed-plate and cylinder.

While the roller F must necessarily have periods of rest, as explained,the bed-plate reverses its movement immediately in the same manner asthe piston of a reciprocating engine, as the driving mechanism shows.The impression-cylinder and rack-bars K, being actuated by the rack-barO on the bed-plate, must also-reverse their motion in the same mannerand at the same time as the latter, and as the rollers L L are carriedby the rack-bars the loop of paper formed by the said rollers and theimpression-cylinder will also be reversed; but at the end of each strokeof the bed-plate the roller F will move the sheet 00 from the roller X asufficient distance to afford sufficient unprinted paper to receiveimpression from the form on the return-stroke of the bedplate. Thus thebed-plate and cylinder coact to print the paper with each movement ofthe former both outward and inward. Without this forwarding action ofthe roller F the loop of paper formed by the rollers L L and thecylinder would be merely reprinted over again as the bed-platereciprocated.

As the rollers L L move the same distance during their reversed actionas during their forward action, the amount of the movement, so that itis sufficient to clear the form and the margin thereto, is notessential, as the forward motion will carry the formed loop of paper asfar forward as the reversed action has carried the previous loopbackward. It is essential, however, that the loop should be ofsufficient length to clear the form and margin.

The loops of paper formed by the rollers L L and the impression-cylinderdo not travel through the machine when the form is printing, but merelytravel around the cylinder in the direction of its rotation, which isalternately in opposite directions, and that part only of each loop isprinted under which the form passes as the bed-plate reciprocates. Inrelation to each loop, the rolls M M may be regarded as fixed points,that portion of the web lying between said rollers not traveling throughthe machine when the form is printing. The coacting of theimpression-cylinder and rollers L L causes the proper part of the loopto be brought against the'form as it passes thereunder on the bed-plate.When the bed-plate is at the end of its stroke in each direction, thefeed mechanism is arranged to come into play. The coacting of the roll;

feed, and in the same direction, so that the tension will always beregular.

In my pending application for printingpress filed November 6, 1882,Serial No. 76,026, the reciprocating bed-plate, reversely-rotatingcylinder, vertically-reciprocating rollers actuated by the bed-plate,vibrating lever having a curved rack-bar, and feedroller provided with aratchet and loose gear, are shown and claimed. I therefore disclaim saidparts as shown and claimed in application No. 76,026.

Having described my invention, I claim- 1. In a printingpress,thecombination,with the reciprocating bed-plate adapted to have a formsecured thereto, and provided with a horizontal rack, and theimpression-cylinder having a gear-wheel secured upon it, whichgear-wheel meshes with and is actuated by the rack of the bed-plate, ofthe four verticallyreciprocating rack-bars actuated by pinions on theends of the impression-cylinder, and the two rollers which have hearingsin and reciprocate with the rack-bars on each side of theimpression-cylinder, and are adapted to form a loop of paper with thelatter, which loop passes between the bedplate and cylinder when thesame are actuated, substantially as described.

2. The combination, with the main frame and impression-cylinder I, ofthe fixed rollers E F G H M M, the adjustable guide-bar or roller N, andshaft 0, provided with the collars 0, the reciprocating rollers L L, andthe rack-bars K, reciprocated by the pinions t" t" on the ends of theimpression-roller, substantially as specified.

3. In a printing-press, the combination of the reciprocating bed-plateprovided with a horizontal rack, the impression-cylinder provided withthe pinion i, meshing with the said rack, the verticallyreciprocatingrackbars, and the rollers L L, with the rollers E F G H M M, theadjustable guide-bar or roller N, and the shaft 0, provided with thedisks 0, substantially as specified.

4. In a printing-press, the combination of the reciprocating bed-plateprovided with a horizontal rack, the impression-cylinder having agear-wheel upon it actuated by said rack, and provided at its ends withpinions of equal size, the four reciprocating rack-bars actuated by saidpinions, the reciprocating rollers having bearings in the rack-bars, andmechanism, substantially as described, whereby the web of paper may beintermittently fed to the im- 5 pression-cylinder, and adapted to feedequal quantities of the web at or near the ends of the reciprocations ofthe bed-plate.

In testimony that I claim the foregoing as my own I aflix my signaturein presence of two witnesses.

JOSEPH L. COX.

Witnesses:

T. H. ALEXANDER, H. R. KEYWORTH.

